DE102018206566A1 - Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system - Google Patents
Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system Download PDFInfo
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- DE102018206566A1 DE102018206566A1 DE102018206566.7A DE102018206566A DE102018206566A1 DE 102018206566 A1 DE102018206566 A1 DE 102018206566A1 DE 102018206566 A DE102018206566 A DE 102018206566A DE 102018206566 A1 DE102018206566 A1 DE 102018206566A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
- B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
- B60T2270/604—Merging friction therewith; Adjusting their repartition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/441—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters
- B60T8/442—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters the booster being a fluid return pump, e.g. in combination with a brake pedal force booster
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
- B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
- B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Fahrzeugbremssystem und ein entsprechendes Verfahren zur Bremsdrucksteigerung in einem ersten Radbremszylinder (12) und Bremsdruckbegrenzung in einem zweiten Radbremszylinder (14) eines Fahrzeugbremssystems mit den Schritten: Steigern eines in dem ersten Radbremszylinder (12) vorliegenden ersten Bremsdrucks, indem während eines fahrerkraftbewirkten und/oder motorisierten Betriebs mindestens einer Bremsdruckaufbauvorrichtung (30, 36) ein erstes Radeinlassventil (16) in seinen geöffneten Zustand gesteuert/gehalten wird und ein erstes Radauslassventil (18) in seinen geschlossenen Zustand gesteuert/gehalten wird, und zumindest Begrenzen einer Steigerung eines in dem zweiten Radbremszylinder (14) vorliegenden zweiten Bremsdrucks während des Transferierens von Bremsflüssigkeit in den ersten Radbremszylinder (12), indem ein zweites Radeinlassventil (20) in seinen geschlossenen Zustand gesteuert/gehalten wird und ein zweites Radauslassventil (22) zumindest zeitweise in seinen geöffneten Zustand gesteuert wird, wobei das zweite Radauslassventil (22) mit einem pulsweitenmodulierten Signal derart angesteuert wird, dass das zweite Radauslassventil (22) während des Transferierens von Bremsflüssigkeit permanent in seinem geöffneten Zustand vorliegt. The present invention relates to a vehicle brake system and a corresponding method for increasing brake pressure in a first wheel brake cylinder (12) and brake pressure limiting in a second wheel brake cylinder (14) of a vehicle brake system comprising the steps of: increasing a first brake pressure present in the first wheel brake cylinder (12) during a driver-operated and / or motorized operation of at least one brake pressure build-up device (30, 36) a first Radeinlassventil (16) is controlled / held in its open state and a first Radauslassventil (18) is controlled / held in its closed state, and at least limiting an increase of in the second wheel brake cylinder (14) present second brake pressure during the transfer of brake fluid in the first wheel brake cylinder (12) by a second Radeinlassventil (20) is controlled / held in its closed state and a second Radauslassventil (22) zumi is temporarily controlled in its open state, wherein the second Radauslassventil (22) is controlled with a pulse width modulated signal such that the second Radauslassventil (22) is permanently present in its open state during the transfer of brake fluid.
Description
Die vorliegende Erfindung betrifft ein Fahrzeugbremssystem. Ebenso betrifft die Erfindung ein Verfahren zur Bremsdrucksteigerung in einem ersten Radbremszylinder und Bremsdruckbegrenzung in einem zweiten Radbremszylinder eines Fahrzeugbremssystems.The present invention relates to a vehicle brake system. Likewise, the invention relates to a method for increasing the brake pressure in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system.
Stand der TechnikState of the art
Mittels der Koordinatensysteme der
Mittels der im Weiteren beschriebenen herkömmlichen Vorgehensweise zur Bremsdrucksteigerung bei gleichzeitiger Bremsdruckbegrenzung soll ein in dem ersten Radbremszylinder
Um gleichzeitig einer unerwünschten Steigerung eines in dem zweiten Radbremszylinder
Offenbarung der ErfindungDisclosure of the invention
Die Erfindung schafft ein Fahrzeugbremssystem mit den Merkmalen des Anspruchs 1 und ein Verfahren zur Bremsdrucksteigerung in einem ersten Radbremszylinder und Bremsdruckbegrenzung in einem zweiten Radbremszylinder eines Fahrzeugbremssystems mit den Merkmalen des Anspruchs 7.The invention provides a vehicle brake system having the features of
Vorteile der Erfindung Advantages of the invention
Die vorliegende Erfindung schafft Möglichkeiten zum Bewirken einer Bremsdrucksteigerung in einem ersten Radbremszylinder eines Fahrzeugbremssystems, wobei ein erster Bremsdruck in dem ersten Radbremszylinder mittels mindestens einer Bremsdruckaufbauvorrichtung relativ schnell steigerbar ist, während gleichzeitig eine unerwünschte Steigerung eines zweiten Bremsdrucks, welcher in einem ebenfalls mittels der mindestens einen Bremsdruckaufbauvorrichtung befüllbaren zweiten Radbremszylinder des Fahrzeugbremssystems vorliegt, verlässlich unterbunden ist. Zusätzlich ist bei einer Nutzung der vorliegenden Erfindung gewährleistet, dass die unerwünschte Steigerung des zweiten Bremsdrucks in dem jeweiligen zweiten Radbremszylinder (im Wesentlichen) geräuschlos verhindert wird/ist. Dies ist ein wesentlicher Vorteil gegenüber dem vorausgehend beschriebenen Stand der Technik, bei welchem das (periodische/zyklische) Aus- und Zuschalten des zweiten Radauslassventils vergleichsweise laute Geräusche auslöst. Ein weiterer Vorteil der vorliegenden Erfindung besteht darin, dass bei ihrer Nutzung die unerwünschte Steigerung des zweiten Bremsdrucks nicht nur begrenzbar ist, sondern konstant unterbindbar/verhinderbar ist. Wie unten genauer ausgeführt wird, muss bei einer Nutzung der vorliegenden Erfindung auch keine Überhitzung des zweiten Radauslassventils befürchtet werden.The present invention provides possibilities for effecting a brake pressure increase in a first wheel brake cylinder of a vehicle brake system, whereby a first brake pressure in the first wheel brake cylinder can be increased relatively quickly by means of at least one brake pressure build-up device, while at the same time an undesired increase of a second brake pressure, which also in at least one Brake pressure build-up device is present fillable second wheel brake cylinder of the vehicle brake system is reliably prevented. In addition, when using the present invention, it is ensured that the undesired increase of the second brake pressure in the respective second wheel brake cylinder is / are prevented (essentially) noiselessly. This is a significant advantage over the prior art described above, in which the (periodic / cyclic) switching off and on of the second Radauslassventils triggers comparatively loud noises. Another advantage of the present invention is that when used, the undesirable increase of the second brake pressure is not only limited, but is constantly inhibited / prevented. As will be explained in more detail below, when using the present invention, no overheating of the second wheel outlet valve also has to be feared.
Die vorliegende Erfindung kann angewandt werden um einen ersten Bremsdruck in einem ersten Radbremszylinder eines Bremskreises eines Fahrzeugbremssystems zu steigern und gleichzeitig eine unerwünschte Steigerung eines zweiten Bremsdrucks in einem zweiten Radbremszylinder des (mit dem jeweiligen ersten Radbremszylinder ausgebildeten) gleichen Bremskreises zu unterbinden. Damit schafft die vorliegende Erfindung Möglichkeiten zum Bewirken einer Bremsdrucksteigerung in höchstens einem (ersten) Radbremszylinder pro Bremskreis eines Fahrzeugbremssystems bei gleichzeitigem Unterbinden einer Bremsdrucksteigerung in mindestens einem weiteren (zweiten) Radbremszylinder des Fahrzeugbremssystems. Ebenso kann die vorliegende Erfindung dazu verwendet werden, einen ersten Bremsdruck in mindestens einem ersten Radbremszylinder eines ersten Bremskreises eines Fahrzeugbremssystems zu steigern und gleichzeitig eine unerwünschte Steigerung eines zweiten Bremsdrucks in mindestens einem zweiten Radbremszylinder eines zweiten Bremskreises des Fahrzeugbremssystems zu unterbinden. Die vorliegende Erfindung ist somit vielseitig einsetzbar.The present invention can be applied to increase a first brake pressure in a first wheel brake cylinder of a brake circuit of a vehicle brake system and at the same time to prevent an undesirable increase of a second brake pressure in a second wheel brake cylinder of the same brake circuit (formed with the respective first wheel brake cylinder). Thus, the present invention provides possibilities for effecting a brake pressure increase in at most one (first) wheel brake cylinder per brake circuit of a vehicle brake system while suppressing a brake pressure increase in at least one other (second) wheel brake cylinder of the vehicle brake system. Likewise, the present invention can be used to increase a first brake pressure in at least one first wheel brake cylinder of a first brake circuit of a vehicle brake system and at the same time to prevent an undesirable increase in a second brake pressure in at least one second wheel brake cylinder of a second brake circuit of the vehicle brake system. The present invention is thus versatile.
In einer vorteilhaften Ausführungsform des Fahrzeugbremssystems ist die Steuervorrichtung während des Betriebs der mindestens einen Bremsdruckaufbauvorrichtung dazu ausgelegt, ein Stromstärkemaximum und einen Tastgrad des pulsweitenmodulierten Signals so gering zu halten, dass das Stromstärkemaximum und der Tastgrad gerade dazu ausreichen, dass das mittels des pulsweitenmodulierten Signals angesteuerte zweite Radauslassventil permanent in seinem geöffneten Zustand vorliegt. Eine zeitlich gemittelte Stromstärke des während des Transferierens von Bremsflüssigkeit in den ersten Radbremszylinder an das zweite Radauslassventil ausgegebenen pulsweitenmodulierten Signals ist somit vergleichsweise niedrig, so dass keine Überhitzung des zweiten Radauslassventils (bzw. seiner Elektronik) zu befürchten ist.In an advantageous embodiment of the vehicle brake system, the control device during operation of the at least one brake pressure build-up device is designed to keep a current maximum and a duty cycle of the pulse width modulated signal so low that the current maximum and the duty cycle just sufficient that the means of the pulse width modulated signal controlled second Wheel outlet valve is permanently in its open state. A time-averaged current intensity of the pulse-width-modulated signal output during the transfer of brake fluid into the first wheel brake cylinder to the second wheel outlet valve is thus comparatively low, so that no overheating of the second wheel outlet valve (or its electronics) is to be feared.
Beispielsweise kann die Steuervorrichtung während des Betriebs der mindestens einen Bremsdruckaufbauvorrichtung dazu ausgelegt sein, das Stromstärkmaximum und den Tastgrad des pulsweitenmodulierten Signals so gering zu halten, dass das pulsweitenmodulierte Signal eine zeitlich gemittelte Stromstärke unter 0,5 A aufweist. Mittels der hier beschriebenen erfindungsgemäßen Vorgehensweise kann somit eine thermische Belastung des zweiten Radauslassventils (bzw. seiner Elektronik) verlässlich minimiert werden. Außerdem kann mittels der hier beschriebenen Vorgehensweise ein Stromverbrauch reduziert werden.For example, during operation of the at least one brake pressure build-up device, the control device may be designed to keep the maximum current intensity and the duty cycle of the pulse-width-modulated signal so small that the pulse-width-modulated signal has a time-averaged current intensity below 0.5 A. By means of the procedure according to the invention described here, a thermal load of the second Radauslassventils (or its electronics) can thus be reliably minimized. In addition, by means of the procedure described here, a power consumption can be reduced.
Vorzugsweise umfasst die Steuervorrichtung zumindest eine Freilaufdiode und ist dazu ausgelegt, das pulsweitenmodulierte Signal mittels der Freilaufdiode an das zweite Radauslassventil auszugeben. Zur Realisierung der vorliegenden Erfindung kann somit die häufig bereits eingesetzte Freilaufdiode mitgenutzt werden. Die vorliegende Erfindung trägt somit auch zur Steigerung einer Multifunktionalität der mitgenutzten Freilaufdiode bei.Preferably, the control device comprises at least one freewheeling diode and is adapted to output the pulse width modulated signal by means of the freewheeling diode to the second Radauslassventil. In order to realize the present invention, the freewheeling diode which is frequently used can thus be used. The present invention thus also contributes to increasing a multi-functionality of the shared freewheeling diode.
Beispielsweise kann das Fahrzeugbremssystem einen Hauptbremszylinder, an welchem ein Bremsbetätigungselement anbindbar oder angebunden ist und/oder welchem ein Bremskraftverstärker vorgelagert ist, mindestens eine Pumpe und/oder mindestens eine motorisierte Plungervorrichtung als die mindestens eine Bremsdruckaufbauvorrichtung umfassen. Damit können an einem Fahrzeugbremssystem häufig bereits vorhandene Bremsdruckaufbauvorrichtungen für die vorliegende Erfindung mitgenutzt werden. Es wird jedoch hier darauf hingewiesen, dass eine Ausführbarkeit der Erfindung nicht auf den Einsatz der hier aufgezählten Beispiele für die mindestens eine Bremsdruckaufbauvorrichtung beschränkt ist.For example, the vehicle brake system may include a master cylinder, to which a brake actuator is attachable or tethered, and / or which is preceded by a brake booster, at least one pump and / or at least one motorized plunger device as the at least one brake pressure build-up device. This can be used on a vehicle brake system often already existing brake pressure build-up devices for the present invention. It should be noted, however, that a feasibility of the invention is not limited to the use of the examples listed here for the at least one brake pressure build-up device.
Wie oben bereits erwähnt, können der erste Radbremszylinder mit seinem ersten Radeinlassventil und seinem ersten Radauslassventil und der zweite Radbremszylinder mit seinem zweiten Radeinlassventil und seinem zweiten Radauslassventil in einem gemeinsamen Bremskreis des Fahrzeugbremssystems angeordnet sein. Die vorliegende Erfindung kann somit dazu genutzt werden, unterschiedliche Bremswirkungen von zwei Radbremszylindern des gleichen Bremskreises auszulösen.As already mentioned above, the first wheel brake cylinder with its first wheel inlet valve and its first wheel outlet valve and the second wheel brake cylinder with its second wheel inlet valve and its second Radauslassventil in a common brake circuit of Vehicle brake system can be arranged. The present invention can thus be used to trigger different braking effects of two wheel brake cylinders of the same brake circuit.
Die oben beschriebenen Vorteile werden auch durch ein Ausführen eines korrespondierenden Verfahrens zur Bremsdrucksteigerung in einem ersten Radbremszylinder und Bremsdruckbegrenzung in einem zweiten Radbremszylinder eines Fahrzeugbremssystems bewirkt. Es wird ausdrücklich darauf hingewiesen, dass das Verfahren gemäß den oben erläuterten Ausführungsformen des Fahrzeugbremssystems weiterbildbar ist.The advantages described above are also achieved by carrying out a corresponding method for increasing the brake pressure in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system. It is expressly understood that the method according to the above-described embodiments of the vehicle brake system can be further developed.
Figurenlistelist of figures
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden nachfolgend anhand der Figuren erläutert. Es zeigen:
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1a bis1c eine schematische Teildarstellung eines Fahrzeugbremssystems und Koordinatensysteme zum Erläutern einer herkömmlichen Vorgehensweise zur Bremsdrucksteigerung bei gleichzeitiger Bremsdruckbegrenzung; -
2a bis2d eine schematische Teildarstellung eines Fahrzeugbremssystems und Koordinatensysteme zum Erläutern einer ersten Ausführungsform des Verfahrens zur Bremsdrucksteigerung in einem ersten Radbremszylinder und Bremsdruckbegrenzung in einem zweiten Radbremszylinder des Fahrzeugbremssystems; -
3 eine schematische Darstellung eines Fahrzeugbremssystems zum Erläutern einer zweiten Ausführungsform des Verfahrens zur Bremsdrucksteigerung in einem ersten Radbremszylinder und Bremsdruckbegrenzung in einem zweiten Radbremszylinder des Fahrzeugbremssystems; und -
4a und4b schematische Darstellungen einer Ausführungsform des Fahrzeugbremssystems und ihrer Steuervorrichtung.
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1a to1c a schematic partial view of a vehicle braking system and coordinate systems for explaining a conventional approach to brake pressure increase while braking pressure limiting; -
2a to2d a schematic partial view of a vehicle brake system and coordinate systems for explaining a first embodiment of the method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of the vehicle brake system; -
3 a schematic representation of a vehicle brake system for explaining a second embodiment of the method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of the vehicle brake system; and -
4a and4b schematic representations of an embodiment of the vehicle brake system and its control device.
Ausführungsformen der ErfindungEmbodiments of the invention
Das in
Das Fahrzeugbremssystem hat auch mindestens eine sowohl an dem ersten Radbremszylinder
Zusätzlich zu dem an dem Hauptbremszylinder
Es wird ausdrücklich darauf hingewiesen, dass eine Ausführbarkeit des im Weiteren beschriebenen Verfahrens weder auf einen bestimmten Bremssystemtyp des Fahrzeugbremssystems noch auf einen speziellen Fahrzeugtyp/Kraftfahrzeugtyp des mit dem Fahrzeugbremssystem ausgestatteten Fahrzeugs/Kraftfahrzeugs limitiert ist. It is expressly pointed out that executability of the method described below is limited neither to a specific brake system type of the vehicle brake system nor to a specific vehicle type / type of vehicle equipped with the vehicle brake system vehicle / motor vehicle.
Mittels des im Weiteren beschriebenen Verfahrens soll eine Bremsdrucksteigerung in dem ersten Radbremszylinder
Bei einem Ausführen des hier beschriebenen Verfahrens wird Bremsflüssigkeit in den ersten Radbremszylinder
Während des Transferierens von Bremsflüssigkeit in den ersten Radbremszylinder
Um eine (unerwünschte) Steigerung des in dem zweiten Radbremszylinder
Dies wird bei dem hier beschriebenen Verfahren bewirkt, indem das zweite Radauslassventil
Die Abszissen der Koordinatensysteme der
Zwischen einer Zeit
Das hier beschriebene Verfahren bewirkt ein „permanentes Offenhalten“ des zweiten Radauslassventils
Vorzugsweise werden während des Transferierens von Bremsflüssigkeit in den ersten Radbremszylinder
Das pulsweitenmodulierte Signal kann mittels einer Freilaufdiode erzeugt und an das zweite Radauslassventil
Das in
Auch bei dem in
Gleichzeitig wird eine Steigerung eines in dem mindestens einen zweiten Radbremszylinder
Damit kann eine Bremsdrucksteigerung in dem mindestens einen ersten Radbremszylinder
Auch die hier beschriebene Ausführungsform des Verfahrens gewährleistet die oben schon genannten Vorteile. Auf eine erneute Aufzählung der Vorteile wird deshalb hier verzichtet.The embodiment of the method described here also ensures the advantages already mentioned above. On a new list of benefits is therefore omitted here.
Mittels der
Mittels der Steuervorrichtung
Wie in
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102012222974 A1 [0003]DE 102012222974 A1 [0003]
Claims (10)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018206566.7A DE102018206566A1 (en) | 2018-04-27 | 2018-04-27 | Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system |
PCT/EP2019/059189 WO2019206647A1 (en) | 2018-04-27 | 2019-04-11 | Vehicle brake system and method for increasing brake pressure in a first wheel brake cylinder and limiting brake pressure in a second wheel brake cylinder of a vehicle brake system |
CN201980028343.XA CN112041205B (en) | 2018-04-27 | 2019-04-11 | Vehicle brake system and method for pressure increase in a first brake cylinder and pressure limitation in a second brake cylinder of such a system |
JP2020556941A JP7101807B2 (en) | 2018-04-27 | 2019-04-11 | A method for increasing the brake pressure in the vehicle brake system and in the first wheel brake cylinder of the vehicle brake system and limiting the brake pressure in the second wheel brake cylinder. |
US17/047,809 US11884254B2 (en) | 2018-04-27 | 2019-04-11 | Vehicle brake system and method for increasing brake pressure in a first wheel brake cylinder and limiting brake pressure in a second wheel brake cylinder of a vehicle brake system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018206566.7A DE102018206566A1 (en) | 2018-04-27 | 2018-04-27 | Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system |
Publications (1)
Publication Number | Publication Date |
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DE102018206566A1 true DE102018206566A1 (en) | 2019-10-31 |
Family
ID=66251737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102018206566.7A Pending DE102018206566A1 (en) | 2018-04-27 | 2018-04-27 | Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system |
Country Status (5)
Country | Link |
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US (1) | US11884254B2 (en) |
JP (1) | JP7101807B2 (en) |
CN (1) | CN112041205B (en) |
DE (1) | DE102018206566A1 (en) |
WO (1) | WO2019206647A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102018206566A1 (en) * | 2018-04-27 | 2019-10-31 | Robert Bosch Gmbh | Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system |
WO2024088485A1 (en) * | 2022-10-27 | 2024-05-02 | Continental Automotive Technologies GmbH | Pressure control with a pump |
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DE102012211278A1 (en) * | 2012-06-29 | 2014-01-02 | Robert Bosch Gmbh | Method for operating a recuperative braking system of a vehicle, control device for a recuperative braking system of a vehicle and recuperative braking system |
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DE102016208529A1 (en) * | 2016-05-18 | 2017-11-23 | Robert Bosch Gmbh | A braking system for a vehicle and method for operating a braking system of a vehicle |
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US10549738B2 (en) * | 2018-02-22 | 2020-02-04 | Ford Global Technologies, Llc | Vehicle brake operation |
DE102018206566A1 (en) * | 2018-04-27 | 2019-10-31 | Robert Bosch Gmbh | Vehicle braking system and method for brake pressure increase in a first wheel brake cylinder and brake pressure limiting in a second wheel brake cylinder of a vehicle brake system |
EP4095005B1 (en) * | 2021-05-25 | 2024-09-11 | C.R.F. Società Consortile per Azioni | Vehicle braking system |
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2018
- 2018-04-27 DE DE102018206566.7A patent/DE102018206566A1/en active Pending
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2019
- 2019-04-11 JP JP2020556941A patent/JP7101807B2/en active Active
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US11884254B2 (en) | 2024-01-30 |
US20210162968A1 (en) | 2021-06-03 |
CN112041205A (en) | 2020-12-04 |
JP2021518827A (en) | 2021-08-05 |
WO2019206647A1 (en) | 2019-10-31 |
CN112041205B (en) | 2022-11-01 |
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